Contact-shoe



I'I-.` G. LEWIS AND W, S. IVIAYER.

coNTAcT sHoE. APPLICATION FILED NOV.20, I9I8.

Patented May 17,1921.

3 SHEETS-SHEET I.

`CONTACT SHAOE.

APPucAnoN FILED Nov.2o, 191s.

ma?, L we m 0QU P. 1 m

l HJG. LEWIS AND S. MAYER.

ycorn/cr SHoE.

APPLICATION FILED NOV- 20,*1918.

Patented May 17, 1921.

3 SHEETS-SHEET 3.

gUNTTED STATES HENRY G.. LEWIS-AND WALTER s. MAYER, or* PHILADELPHIA,PENNSYLVANIA,

ASSIGNORS T0 ELECTRIC SERVICE SUPPLIES COMPANY, 0F PHILADELPHIAPENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CONTACT-SHOE.

State of Pennsylvania, have jointly invented.

certain.'Improvements in Contact-Shoes, of whichthe followingis aspecilication.

This invention is an improved contact shoe designed especially fortaking current from a contact rail in the operation ofelectric cars,cranes, conveyers and other electrically operating traveling devices. Itcomprises means whereby the shoe is adaptedv to be reversed so that yitcan be used for making either top or vbottom running Contact, means`whereby the contact member is adapted to be reversed by turning'it inits own` plane or about either Q of transverse axes to effect a desireddistribution of wear, means whereby the contact member is permitted a.limited universal play toeiiect a desiredaccommodation to the' 'is toprovide a'contact shoe of simple,` sub- 30 stantial andefficientcharacter'adapted for automatic as well as manual adjustment tovarying conditionsofv use, whether -inthe operation ofV cars orotherwise.

The characteristic'features andadvantages of our improved shoe will bemore fully understood from the following description of typesthereof andthe accompanying drawings illustratingsamek e l In .the drawings, F'gure1is a top plan view ofv a shoe madeinaccordance with, our invention g` Fig'. 2 is a side view of the same applied to a support shown in section;Fig. Sis a front elevation/of said shoe; Fig. 4 is atop plan View ofamodied construction;

Fig. 5 is ya side elevation of the construction shown in Fig. 4`appliedto a support shown in section; Fig. 6 is a sectional view takenvSpecification of Letters Patent.l

' 1 adapted to be clamped to a support 2 suche Patented May 17, 1921.Appli-cation filed November-20, 1918. Serial No. 263,259. v

as a car sill, the bracket beingv adjustable to and held in diierentvertical positions byy means of the slots 3 for passage of .bolts 4carried by the support and the serrated sections 5 ,for engagement withserrated` blocks 6 clamped thereto lby the nuts 7 on the bolts.

The bracket is provided further with the cylindrical bearings 8 onopposite sides of its lower part, and with the housing 9 prO- vidingseats 10 and 11 containing the respectiveV slots 12 and 13, disposedbetween` the bearings. yA block 14 containing sockets 15 and 16 isclamped by the bolts 17 tothe' bracket above the housing 9.

In the form of the invention illustrated Figs. 1 to 3 inclusive,` arocker arm 18 is provided with the integrally formed bear,- ings 19 andthe detachable bearings 20 clamped together by the bolts 21 around thebearings 8 in rocking relation thereto, the rocker arm being providedwith the further bearings 22 having the ins 23thereon.

A contact member 24 is engaged between the bearings 22 by a pin 2 5passing therethrough, the' pin being of such smaller diameter than themembers central bore A26 and larger end bores 27 asto permit such membersubstantial play universally with relation to such pin. .The contactmember 24 is provided with the corner recesses 29 of increasing depth asthey approach the respective edges of the member, withrvthe re cesses 30between` thev respective pairs of recesses 29, Vwith sockets 31 betweencontiguousrrecesses 29 and 30, and with threaded holes 32 adapted forreceiving binding screws 33, providing a comparatively light..

as well as strong structure having convenient means in its severalreversed positions fon (when the pin isremoved and the wires de-rtached) by turning suchmember in its* own plane or upside down eitheraround its axis ortransverse thereto.

In the form illustrated in 4 and 5,

yso

the modified rocker arm 18 which is engaged to the bearings 8 aspreviously described, is provided with a bearing 22 which extends intothe recess or through passage 30 of the contact member 24"; this memberbeing provided with the corner recesses 2 9,

the sockets 31 for the wires 34, and the bores27 for the passage of apin 25 which extends through the larger bore 26 in the bearing 22. rIhemember 24 is `permitted a limited universal oscillation, on its axis-and transversely thereto, by its free connection with the part 18', andcan be reversed; the automatic movement to effect accommodation due toirregularities in the rail or the swaying of the car and the reversal toeifect `distribution of wear, as described in connection with the member24, for which it can be substituted.

The arms 18 and 18 are each provided with a seat or socket 35 forholdinga spring 36, through which and one of the slots 12 or 13 passes abolt 37, the bolt head engaging a washer or bearing 38 through whichtension is applied to the spring and pressure is applied thereby to theseat by screwing up thev bolts nut.

A substantially U-shaped guard 39 is adapted to be sprung over the parts10 and 11, having ahole 40 in a leg thereof for the passage of the bolt37 'to hold it in place.

In the application of the spring 36 and its connected parts, asillustrated, the arms 18' and 18 to which they are applied will bepressed upwardly, to press the members 24 and 24 upwardly, as requiredfor underrunning contact. But it will be understood that by disengagingthe parts 20, 37 and 39 the corresponding parts 18 and 18 can bereversed in their relation to the part 1 and connected for effecting atop running convtact with the member 24 and 24', the bolt 37 nowextending downwardly through the slot 12 and drawing downwardly upon thespring 36 which acts through its-seat 35 to press downwardly thecorresponding arms 18 land 18.

In the form illustrated in Figs. 7 and 8, the bracket 1 carries anintegrally formed arm and contact member 18 connected in reversiblerelation to the bearings 8 for effecting either top or bottom contact,by the parts 19 and 20 through which pass the bolts 21 and which haveends of the conductors 34 clamped between them to carry currenttherefrom to the part 14. The part 18, which is shown in top runningrelation to the rail, is pressed downwardly by the connection of therecessed bolt 37 with the reversed guard 39 and the part 10, the bol-ltacting through the washer 38 on the spring 36 in the socket 38, reversedwith relation to the position thereof previously shown.

Having described our invention, we claim: 1. In an electrical contactdevice, thecombination with a supporting member, of an oscillatorymember connected in reversible relation thereto, a contact membercarried by said oscillatory member, and mechanism comprising reversiblemeans whereby 'said oscillatory member can be pressed in oppositedirections.

2. In an electrical contact device,the combination with a supportingmember provided with bearings,of .an oscillatory member having bearingsadapted to be clamped together around said bearings irst named,

a contact member connected in movable relation'to said oscillatorymember and mechanism comprising reversible means whereby `saidoscillatory member can be pressed in opposite directions.

3. In an electrical contact device, the combination with a supportingmember,of an oscillatory member connected in reversible relation theretoand limited to movement on 1 a horizontal axis, and a contact memberconnected in 'universally movable relation relative to said oscillatorymember.

4. In an electrical contact device, the combination with a supportingmember having bearings, of a member connected in oscillatory relation tosaid supporting member and having a bearing disposed betweensaid beariings first named, means comprising a spring adapted to be disposedbetween said bearing second named and either of said bearings firstnamed to press said oscillatory member in either direction, and acontact member connected with said oscillatory member.

5. In an electrical contact device, the combination with a supportingmember having oppositely disposed bearings and oppositely disposedslotted seats, of an oscillatory member mounted on said bearings, saidoscillatory member havinga seat connected there-- with, a bolt adaptedto be passed through said seat and either of said seats, a springadapted to be placed on said bolt between said seat and either of saidseats, and a contact member vconnected to said oscillatory member. 6. Inan electrical contact device, the combination witha supporting memberhaving seats, of an oscillatory member connected in reversiblerelationto said supporting member and havingla seat, a bolt extendingropposite directions, and a Contact member pivotally connected inreversible relation to said oscillatory member, said oscillatory andcontact members having engaging means `for limiting the movement of saidcontact member.

8. In an electrical contact device, the combination vvith a bracket, ofreversible mechanism comprising a contact member connected inoscillatory relation to said bracket, and means for pressing saidmechanism in opposite directions in its reversed positions.

9. In an electrical contact device, the combination With a supportingmember having bearings and means Jfor holding conductors, of reversiblemechanism comprising a contact member and separable bearings adapted forengaging said bearings lirst named and clamping said conductors, andmeans for pressing said mechanism in opposite directions in its reversedpositions.

In testimony whereof We have hereunto set our names this 13th day ofNovember,

` HENRY G. LEWIS.

WALTER S. MAYER.

